Key configuration for an input device



FIG. 1 is a perspective view of a key configuration for an input device showing our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a left side view thereof; and,

FIG. 6 is a right side view thereof.

The broken line showing of the remainder of the input device is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a key configuration for an input device, as shown and described. 